Improved skimmee foe soegeum-evaporatoes



1.' LEWIS. A Sorghum Evaporator. I

No. 82,330. Patented sept. 22', 186s.

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Letters vPatent No. 82,330, dated September22, 1868.

IMPROVED SUMMER FOB. SORGHUM-EVAPORATORS.

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TO ALL WHOM IT MAY-CONCERN:

Be it known that I, JESSE B. LEWIS, of Lincoln, in the county'otI Gallia, and State of Ohio, have invented a. new and useful Improvement in Sorghum-Evaporators; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in theart to make 4and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a top view of an evaporating-pan, to which my improvement has been attached.

Figure 2 is a vertical cross-section ofthe same, `taken through the line :t w, tig. 1.

Similar letters of reference' indicate like parts.

My invention has for its object to furnish an improved attachment for evaporating-pans, by means of which the pan may be made self-skimming, by the use of which a purer and better article may be manufactured, and with less labor than when the ordinary evaporating-pans are used.

It consists in the construction of the automatic skimmer-lid, and'in its combination with the evaporatingpan; 'as hereinafter more fully described. y

A represents an ordinary evaporating-pau, the bottom of which is made of sheet metal, and the sides and ends of which are formed of wood, in the usual manner, and which may be provided with ashort pipe for drawing otl the molasses or sirup. The inner upper edges of the sides and ends of the pan A are bevelled off, as shown in fig. 2, to form a seat for the lid B.

The sides and ends of the lid B are formed of wood, and the outer sides of their lower edges are bevelled o, as shown in g.r2, to fit into the mouth of the pan A. The ends of the lid B have a shoulder formed upon them, so that the forward ends of their upper parts may project beyond the side of the pan A, as shown in figs. 1 and 2. The upper part of the front side-of the frame oi' thelid B is cut away, as shown in the drawings, to receive the plate b1, which is attached to the inner sides of the main parts of the ends of the lid B, to the lower edges of the projecting parts of said ends, and the front edge of which is turned up to form the for- Ward side of the lid B. i

The middle part of themetallic plate or bottom, bl, is made horizontal, and its inner part is inclined upward till within about an inch of the upper edge of the wooden part or frame of said lid B, as shown in fig. 2. In the plate or bottom of the lid b1, at the angle formed by the inclined and horizontal parts of said plate or bottom, is formed a series of small holes, as shown in iig.

112 are two or more small pipes, leading through the inclined part of the plate b1, and the upper ends of which are about an inch below the level of the upper edge of the said inclined part of the said plate b1, as shown in fig. 2. i

In using the apparatus, the juice to be evaporated is placed in thepan A, and the lid B arranged in'place.

As the juice rises with the application of heat, it flows over the upper edge of the inclined part of the plate bl, carrying the sc'um with it, and flows down to the horizontal part of said plate, the juice liowingbackthrough the perforations of the plate b1 into the pan A, leaving the scum, which may be removedfat leisure. When the juice is boiling rapidly, it may dow over the upper edge of the bottom, b1, faster than it can drain ofi' through .the perforati'ons in said plate. In this case, before the juice has risen to the upper edge of the inclined part of the plate b1, it will reach the upper ends of the pipes b2, andfiiow back through them into the pan A, thus guarding against any back iiow of the juice and scum over the upper edge of said plate into the pan A.

The back part of the lid B is planked or covered over more or less, as may be desired, or necessary to shut in the heat suiiciently to cause the juice to iiow freely.

Thel planking or cover 63 may be made lin one piece, as shown in the drawing, or it may be made in tw'o' parts, the rear part being stationary, and the front part being hinged to the said rear part, so that it may be adjusted to shut in the heat more or less closely, as may be desired. This latter construction I prefer.

Having thus described my invention, I claim as new, and desire to secure'by Letters Patent- 1. The-automatic skimmer-lid B, formed by attaching the perforated metallic plate b1, constructed as described, and having pipes b2 inserted in it to the wooden frame, of said lid, substantiallyas and, for the purpose set forth.'

2. The combination of the automatic skimmer-lid B, constructed as described, with an ordinary evaporatingpan, A, substantially as and for the purpose set forth.

' JESSE B. LEWIS.

Witnesses LEWIS NIDAY, JAS. R.- DRUMMOND. 

